Marktest is leading in Top 10K Sites and Top 100K Sites.
WebProspector has better usage coverage in more websites categories. Including Business & Industry, Internet & Telecom, Marketing & Advertising, Arts & Entertainment and 44 other categories.
Marktest is leading in Newspapers and Soccer.
WebProspector is leading in most countries, including Germany, United Kingdom, Austria, Italy and 13 other countries.
Marktest is leading in Portugal and Brazil.